erupt.
To eject something violently (such as lava or water, as from a volcano or geyser).
Meaning & usage
To eject something violently (such as lava or water, as from a volcano or geyser).
The volcano erupted, spewing lava across a wide area.
To burst forth; to break out.
The third molar tooth erupts late in most people, and sometimes does not appear at all.
To spontaneously release pressure or tension.
The crowd erupted in anger.
The whole table erupted in laughter.
(Of birds, insects, etc.) To suddenly appear in a certain region in large numbers.
Where this word comes from
From Latin eruptus, past participle of ērumpō (“to break out (of), to burst out (from)”), from e (“out”) + rumpō (“to break”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.